You will be in good hands with the fellows at Coach Worx.

If the HWH is leveling with the key off think about this for a moment.

To lift your front end with the air bags I will bet is going to require more than 100PSI and I know some coaches that are fat in front can require as much as 120 PSI. So if your aux system cannot reach and maintain those pressures nothing is going to happen when the HWH asks for the front to be raised.

As to the rear.... We have had some nights in the coach when the wind was blowing we could actually feel the coach rocking. If the HWH is continuous or is sampling every 30 minutes it is at some point going to read an out of level situation due to the winds. If the wind is pushing the side and it compresses the lee side air bag while extending the windward side air bag it is going to call for the release of air in one side and a charge of air in the other, when in fact if left alone a good leak free system will not require anything so instead your aux air system is going to be asked every 30 minutes to make adustments. My rear air bags start to raise the coach at 70 PSI. I don't know their pressure when at ride height. My point is your rear air bag pressures may be within the compressor control switch range and even though HWH thinks air needs to be added (or depleted) the aux system isn't going to because the pressure isn't low enough to trigger the aux compressor.

When a non HWH coach is leveled, and the key is off the air is locked into the air bags. At least on a tight system. that means on a windy night you may feel motion, but not have to hear or have the aux air compresor work. Fix the leaks and you don't need to be monitoring the system for level or have a system on board that does.